What are some examples of Test-Driven Development in different programming languages?

What are some examples of Test-Driven Development in different programming languages?

Test-Driven Development (TDD) is a software development process where tests are written before the code. For example, in Python, you might use the unittest framework, while in Java, you could use JUnit. Would you like to know more about a specific language?

Can you give me a Python example?

Sure! In Python, you would first write a test case like this:

import unittest

def add(a, b):
    return a + b

class TestAddFunction(unittest.TestCase):
    def test_add(self):
        self.assertEqual(add(1, 2), 3)

if __name__ == '__main__':
    unittest.main()

You run the test, see it fail, then implement the add function to pass the test.

What about Java?

In Java, you would use JUnit like this:

import static org.junit.Assert.*;
import org.junit.Test;

public class AddTest {
    public int add(int a, int b) {
        return a + b;
    }

    @Test
    public void testAdd() {
        assertEquals(3, add(1, 2));
    }
}

You write the test first, run it, and then implement the add method to make the test pass.

What are the benefits of using TDD?

TDD helps ensure code quality, reduces bugs, and improves design. It also provides a safety net for refactoring and enhances collaboration among team members.